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Asthma
2
Schoolchildren
VDP::Medical disciplines: 700::Health sciences: 800::Epidemiology medical and dental statistics: 803
2
VDP::Medisinske Fag: 700::Helsefag: 800::Epidemiologi medisinsk og odontologisk statistikk: 803
2
Allergic rhinoconjunctivitis
1
Case-control
1
Prevalence
1
Risk factors
1
Subarctic
1
Time trends
1
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